Improvement in priming metallic cartridg-es



R. J. G-ATLING Priming Metallic Cartridges.

Pa tented June 16, 1868.

rrno STATES PATENT -FFIGE.

R'ICHARD'J. GATLING, or IND-'IAN'ADOLIS, INDI'ANA,

IMPROVEMENT IN PRIMING- METALLIC CARTRIDGES.

Specified! [011. forming part f'Lctfcrs Patent No. 8,953, dated June 16, 1868.

1'0 all 107mm it may concern:

Be it known that I,-RICHARD J. GATLING, of Indianapolis, in "the county of Marion and State of Indiana, have invented a new and useful Improvement in Cartridges 5 and 1 do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being bad to the a:- compauyiug drawings, forming part of this specification, in which- Figure 1- represents alongitudinal sectional view of my improved cartridgd. Fig. 2 is a transverse sectional view of the same.

Similar letters of reference indicate correspondingparts.

This invention relates to an improvement in metallic center-lire cartridges; and it consists in placing the priming or fulminate within a small metallic cup fitting within a recess or depression in the head of acup inserted in the shell of the cartridge. The edge of the priming or fulminate cup, by fitting within this recess, effectually prevents the escape of gas through the back of the cartridge, between the shell and the larger cup.

A. represents the shell or case of a metallic cartridge. B is the cup inserted in the back part of the shell. 0 is the priniingcup, fitted into the center of the cup B.

The cup 13 acts as a gas-check when the cartridge is. exploded, and is strong enough to prevent the bursting of the head of the cartridge by the force of the charge. This is of great importance, as the same shell can now be used to hold a greater charge of powder than could heretofore be held in' a metallic cartridge.

The use of the cup B gives equal pressure and elasticity to the head of the cartridge, and as the cup receives the strain of the discharge, any expansion of" the head of the cartridge is prevented, Cartridges made on this improved plan will keep and remain good for an indefinite period, as the primingcup is not exposed to the influence ot the atmosphere.

The cup It is secured in position by being fitted snugly in the main shell or case A, and

to the shell in any by then tapering the said shell in the ordinary manner, whereby the cup B will be firmly secured,

Ifdesired, the cup 13 maybe also secured suitable manner, as by soldering, riveting, or other process.

The priming-cup is placed in the cup B, with its edges snugly ti hing the sides of the recess. The cup B hasiin its center aprojectiug teat, a-, extending almost to the-rear of the cup inclosed by the priming-cup. When the head of the cartridge is struck by the needle, the head of the shell and of the cup 0 are bent in until the outer part of the priming-cup strikes the teat 02, thereby exploding the fnhninate, which is forced through holes b b in the cup'B into the powder in thcshcll, thereby exploding the same.

The bent edgesof the primingcup, when the charge is exploded, form an eliectnal gascheck, and prevent the gas from passing between the cup B'and the end of the cartridgecase.

I do not'claim inserting the priining cup U in the'onter shell A, as that has been done before nor do I claim anything in the shape or construction of the priming-cup; nor do I claim arranging the cup B for holding loose fulminate; nor do I claim placing theifulminate in a recess in the end of the inner shell or block; but I I do claim and desire to secure by Letters Patent I The struck up metalliecup 13,'fitted within the'shell A, without contact with the flanges of the latter, and recessed to form the anvil a,

and to receive thevcup O, fitting inclose contact with the sides of said recess, for the purpose of preventing theescape of gas between .the .s'heltAand euplj, as herein shown and described. W

The above specification of my invention 'signed by me this 7th day-of August,=1 867.

n. J, GATLING.

- Witnesses:

A. v. BRIESEN, S. G. JONES. 

